Adjustable ventilator



Aug. 15, 1944. F. J. BURNS ADJUSTABLE VENT ILATOR Filed Aug. 28, 1941Patentedug. 15, 1944 i: Y ,a

UNITED STATES PATENT OFFICE ADJUSTABLE VENTILATOR Fred J. Burns,Saginaw,l Mich., assigner to Thev Columbia Mills, Inc., New York, N. Y.,a corporation of New York y Application August 28, 1941, Serial No.408,(307

(Cl. S18-99.8)

2 Claims.

This invention relates to window ventilators for controlling the aircurrents and preventing strong drafts of air from entering the roomthroughthe opening in the window in which the ventilator is installed.

One of the prime objects of the invention is to provide an adjustablewindow ventilator which can be adjusted to suit window openings ofvarious widths, and which is designed to exclude rain, sleet, and snoW.

Another object of the invention is to design a window ventilator whichis of neat and pleasing appearance, which can be readily andeconomically manufactured and assembled, which retains its originalshape, and is not affected by strong winds and rough usage.

A .further object is to provide a ventilator which requires a minimum ofmaterial and parts, and in which the ends of the slats are shaped toform guides for slidably accommodating the overlapping companion slats.

A still further object is to provide means on the slats to limit theoutward adjustment thereof1 eliminating the possibility of sliding thesections to extreme extended position, in which position there would bea minimum of slat contact and the slats might be bent, kinked, ordistorted by strong winds or rough handling, thus destroying; theeiciency of the Ventilator, as well as the possibility that thedistortion might permanently kink the slats and destroy or impair thesliding or adjustable features thereof.

A further object still is to provide a ventilator provided withresilient metal slats which readily return to shape when bent, whichwill not bind, which is not affected by moisture, and in which friction,due to the sliding movement, is reduced to a minimum.

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompanyingdrawing forming part of this specification, with the understanding,however, that the invention is not confined to any strict conformitywith the showing in the drawing, but may be changed and modied as longas such changes and modifications mark no material departure from thesalient features of the invention as expressed in the appended claims.

In the drawing:

Fig. 1 is a fragmentary view showing my adjustable ventilator mounted ina window openlng;

Fig. 2 is an enlarged isometric view of the ventilator, the broken linesillustrating the adjustinent;

Fig. 3 is an enlarged fragmentary isometric View showing the blanked endof the slat, the one leg being bent upwardly; and

Fig. 4 is a view showing an alternate manner of forming the guides.

Referring now more particularly to the drawing, the numeral 5 indicatesa conventional Window frame having upper and lower sash 6 and l asusual, which sash can be raised as shown in Fig. l of the drawing topermit insertion and/or removal of the ventilator B for controlling theair currents admitted to a room, and for excluding rain, snow, and theelements therefrom.

The ventilator proper comprises a pair of vertically disposed end postsor supports 8 which can be of any desired shape, and which can be formedof Wood, metal, or other material. One end of each of a plurality ofmetal slat members 9 is secured to each post 8 in vertically spacedoverlapping relation, and I nd it desirable to provide saw cuts or slitsI0 in the posts as shown to snugly accommodate the ends of the slats,thus providing maximum Contact and firm anchorage, and nails or othersecuring means Il being provided as usual. Each end post 8 has exactlythe same number of slats in the same spaced alignment, so that whenplaced in assembled relation, the slats nest on each other in facialcontact; and While in the present instance I have shown a slat,crown-shape in cross section, it will be obvious that any other desiredshape may be used.

These slat sections 9 are designed to slide on each other to permitadjustment to suit window openings of Various widths; and I, therefore,provide guides l2 on the free end only of each slat for slidablyaccommodating the aligned companion slat, the end of each slat beingblanked as shown in Fig. 3 to form legs I3, which legs are bent on thediagonal line I4, and thence over on the line l5, so that they formguides which slidably accommodate the companion slat.

Stops I6 are provided on each slat at a point spaced from the free endthereof as shown, each slat being punched to slightly raise the metaland form the stop which is engaged by one of the guides I2 to limit theextension movement when the, ventilator is adjusted. These stops formpart of the blanking operation and are very economical to provide, aswell as effective in operation.

In Fig. 4 of the drawing I have shown a slightly different constructionin which a short metal section I1 is secured on the free end of eachslat, the top and bottom edges of these sections being bent over andaround as at I8 to form guides. This, however is not as economical tomanufacture as is the first described construction.

The ventilator can be made to any desired size and with any desirednumber of slats, and the vertical spacingA and overlap made toV suit thedesires -of the trade.

From the foregoing description it will be obvious that I have perfecteda very simple, practical, and neat appearing adjustable ventilator whichharmonizes with the window trim, and which controls the air currentsadmitted to the room.

What I claim is:

1. The method of forming adjustable ventilator slats which consists inpunching the end section of readily bendable metal strips ofpredetermined length to provide horizontally extending legs on the oneend of each slat and then bending the legs on a line disposed at anangle with relation to the horizontal axis of the slat so that the legsproject beyond the upper and lower edges of the slat, and then bendingsaid legs over so that they lie in spaced parallel relation with themain slat body to engage and form a guide for a similarly formedcompanion slat.

2. An adjustable window ventilator comprising spaced apart end supports,a plurality of metal slatsY carried'by each support each slat being ofuniform width throughout its length, one end only of each slat beinganchored to the support with the projecting free end disposed in facial,sliding contact with the free end of a similar slat mounted in thecompanion support, leg guides formed integral with the free ends of eachsla-t, each leg being bent at an angle with relation to the horizontalaxis of the slat, and thence bent over and down in spaced relation withthe main body of the slat to Slidably accommodate the free end of thecompanion slat, and raised sections on each slat, and forming stops forlimiting'the outward adjustment of the ventilator.

' FRED J. BURNS.

